Hi EgbertBroerse,
you probably followed the instructions in the wiki.
Sadly, the infos are outdated, because we change the translation platform.
Because the new service is still locked for contributions, we didn't update our sites yet.
I've done this now, to avoid further confusions.
Long story short, you can register on Weblate to contribute in translation there.
Find the links on the new wiki page
https://dokuwiki.librecad.org/doku.php/community:contribute_translate.
As already said, the service is still locked currently, but you can sign up for a notification when the components are unlocked.
Many thanks for your efforts!
Armin
investing less than half an hour into Search function can save hours or days of waiting for a solution